Lolita is told in the voice of a fictional memoir- Humbert speaks directly to the reader, becoming the author of his memoir about his sexual relationship with a minor. A child we never learn anything about other than her many names. 

The story of a serial predator who grooms a young girl, abducts her, takes her on a cross country road trip, prevents her escape and abuses her at every turn. 

This book is great in its intentionality - nothing here is an accident. The intention of Humbert Humbert is unfortunately not uncommon nor unusual and Nabokov uses Lolita to hold up a mirror to our society and what it ignores. It's terrible and unthinkable and appealing and it happens all the time.

"The book is ultimately not a portrait of a monster, but a portrait of a girl's annihilation." - Claire Dederer